If you have not manually disabled the data enabled setting then your issue of the phone not ringing is probably unrelated to the data on/off. By default, both the background data and data enabled settings are both checked (turned on). To double check, go to settings, data manager, then data delivery, there should be 3 data options: background data, data roaming, and data enabled. The data roaming is by default turned off. We were manually disabling the mobile 3g data by unchecking the data enabled box. After much research, troubleshooting, and 2 phones, we found that by leaving the data enabled, the phone always rings as it should. We have since upgraded to the unlimited data plan, so usage is now not an issue, and we have not had any problems with the phone not ringing in nearly 2 weeks. Disabling the background data is a personal preference and has had no impact on receiving calls when this is unchecked. When you disable the background data a message appears stating that disabling will improve battery life. I've found that this issue is D2 related, as both D2's had the exact same issue when we turned the data off, and my DInc has never had this issue and my data is almost always turned off. I would first check this setting and if you haven't done it already, *228 option 2 from your home calling area. VW tech support also had us do a battery pull, a factory reset, and they refreshed the phone. If you've exhausted all troubleshooting both personally and with VW tech support, I wouldn't waste any more time and request an exchange or a replacement phone. Good luck.